18785853

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:641

約数の個数: 24

約数和(自身を含む): 28080000

約数和(自身を除く): 9294147

約数列:

[1, 3, 9, 47, 89, 141, 267, 423, 499, 801, 1497, 4183, 4491, 12549, 23453, 37647, 44411, 70359, 133233, 211077, 399699, 2087317, 6261951, 18785853]

約数ペア:

[(1, 18785853), (3, 6261951), (9, 2087317), (47, 399699), (89, 211077), (141, 133233), (267, 70359), (423, 44411), (499, 37647), (801, 23453), (1497, 12549), (4183, 4491)]